<template>
  <div class="mod-config">
    <el-form :inline="true" :model="dataForm" @keyup.enter.native="getDataList()">
      <el-form-item>
        <el-input v-model="dataForm.key" placeholder="参数名" clearable></el-input>
      </el-form-item>
      <el-form-item>
        <el-button @click="getDataList()">查询</el-button>
        <el-button v-if="isAuth('wiki:article:save')" type="primary" @click="addOrUpdateHandle()">新增</el-button>
        <el-button v-if="isAuth('wiki:article:delete')" type="danger" @click="deleteHandle()"
                   :disabled="dataListSelections.length <= 0">批量删除
        </el-button>
      </el-form-item>
    </el-form>
    <div style="display: flex;">
      <div style="margin-right: 20px;min-width: 220px;">
        <el-tree
          :default-expanded-keys="[categoryId]"
          highlight-current
          ref="treeLeft"
          node-key="id"
          :props="treeProps"
          lazy
          :load="loadNode"
          @check-change="handleClick" @node-click="nodeClick"
        >
        </el-tree>
      </div>
      <!--      table-->
      <el-table
        :data="dataList"
        border
        v-loading="dataListLoading"
        @selection-change="selectionChangeHandle"
        style="width: 100%;">
        <el-table-column
          type="selection"
          header-align="center"
          align="center"
          width="50">
        </el-table-column>
        <el-table-column
          prop="id"
          header-align="center"
          align="center"
          label="id">
        </el-table-column>
        <el-table-column
          prop="title"
          header-align="center"
          align="center"
          label="文章名称">
        </el-table-column>
        <el-table-column
          prop="content"
          header-align="center"
          align="center"
          label="文章内容">
          <template slot-scope="scope">
            <div class="text-overflow1">{{scope.row.content}}</div>
          </template>
        </el-table-column>
        <!-- <el-table-column
           prop="isDelected"
           header-align="center"
           align="center"
           label="0正常 1已经删除">
         </el-table-column>-->
        <el-table-column
          prop="categoryName"
          header-align="center"
          align="center"
          label="栏目">
          <template slot-scope="scope">
            {{scope.row.categoryName}}
          </template>
        </el-table-column>
        <el-table-column
          fixed="right"
          header-align="center"
          align="center"
          width="150"
          label="操作">
          <template slot-scope="scope">
            <el-button type="text" size="small" @click="()=>{
            g.createA(`#/front/wiki/article/${scope.row.id}`)
          }">预览
            </el-button>
            <el-button type="text" size="small" @click="addOrUpdateHandle(scope.row.id)">修改</el-button>
            <el-button type="text" size="small" @click="deleteHandle(scope.row.id)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <!--      table:end-->
    </div>

    <el-pagination
      @size-change="sizeChangeHandle"
      @current-change="currentChangeHandle"
      :current-page="pageIndex"
      :page-sizes="[10, 20, 50, 100]"
      :page-size="pageSize"
      :total="totalPage"
      layout="total, sizes, prev, pager, next, jumper">
    </el-pagination>
    <!-- 弹窗, 新增 / 修改 -->
    <add-or-update v-if="addOrUpdateVisible" ref="addOrUpdate" @refreshDataList="getDataList"></add-or-update>
  </div>
</template>

<script>
  import AddOrUpdate from './article-add-or-update'

  export default {
    data() {
      return {
        treeProps: {
          id: "id",
          label: 'name',
          children: 'children',
          isLeaf: 'isleaf'
        },
        treeData: [],
        dataForm: {
          key: ''
        },
        dataList: [],
        pageIndex: 1,
        pageSize: 10,
        totalPage: 0,
        dataListLoading: false,
        dataListSelections: [],
        addOrUpdateVisible: false,
        categoryId: undefined
      }
    },
    components: {
      AddOrUpdate
    },
    activated() {
    },
    methods: {
      ajaxTreeData(parentId = 0) {
        return this.$http({
          url: this.$http.adornUrl('/wiki/category/list'),
          method: 'get',
          params: this.$http.adornParams({
            'page': 0,
            'limit': 999,
            'key': '',
            parentId: parentId || 0
          })
        }).then(({data}) => {
          //如果 二级就加入 isleaf
          var treeNodeList = data.data.list.map(item => {
            if (item.parentId != 0) {
              item.isleaf = true
            } else {
              item.isleaf = false
            }
            return item
          })
          return treeNodeList
        })
      },
      loadNode(node, resolve) {
        if (node.level == 0) {
          this.ajaxTreeData().then(data => {
            resolve(data)
          })
          return false
        }
        if (node.level > 3) return resolve([]);
        var nodeReal = this.$refs.treeLeft && this.$refs.treeLeft.getNode &&
          this.$refs.treeLeft.getNode(node)
        if (nodeReal && nodeReal.data) {
          this.ajaxTreeData(nodeReal.data.id).then(data => {
            resolve(data)
          })
        } else {
          resolve([])
        }
      },
      handleClick(data, checked, node) {
        if (checked == true) {
          this.checkedId = data.id;
          this.$refs.treeLeft.setCheckedNodes([data]);
        }
      },
      nodeClick(data, checked, node) {
        this.checkedId = data.id
        this.$refs.treeLeft.setCheckedNodes([data]);
        if (data && data.children.length == 0) {
          this.categoryId = data.id
          this.dataList = []
          this.pageIndex = 1
          this.getDataList()
        }
      },

      // 获取数据列表
      getDataList() {
        this.dataListLoading = true
        this.$http({
          url: this.$http.adornUrl('/wiki/article/list'),
          method: 'get',
          params: this.$http.adornParams({
            'page': this.pageIndex,
            'limit': this.pageSize,
            'key': this.dataForm.key,
            categoryId: this.categoryId
          })
        }).then(({data}) => {
          if (data && data.code === 0) {
            this.dataList = data.page.list
            this.totalPage = data.page.totalCount
          } else {
            this.dataList = []
            this.totalPage = 0
          }
          this.dataListLoading = false
          if (this.categoryId) {
            this.$refs.treeLeft.setCheckedNodes([this.categoryId]);
          }
        })
      },
      // 每页数
      sizeChangeHandle(val) {
        this.pageSize = val
        this.pageIndex = 1
        this.getDataList()
      },
      // 当前页
      currentChangeHandle(val) {
        this.pageIndex = val
        this.getDataList()
      },
      // 多选
      selectionChangeHandle(val) {
        this.dataListSelections = val
      },
      // 新增 / 修改
      addOrUpdateHandle(id) {
        this.addOrUpdateVisible = true
        this.$nextTick(() => {
          this.$refs.addOrUpdate.init(id, this.categoryId)
        })
      },
      // 删除
      deleteHandle(id) {
        var ids = id ? [id] : this.dataListSelections.map(item => {
          return item.id
        })
        this.$confirm(`确定对[id=${ids.join(',')}]进行[${id ? '删除' : '批量删除'}]操作?`, '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          this.$http({
            url: this.$http.adornUrl('/wiki/article/delete'),
            method: 'post',
            data: this.$http.adornData(ids, false)
          }).then(({data}) => {
            if (data && data.code === 0) {
              this.$message({
                message: '操作成功',
                type: 'success',
                duration: 1500,
                onClose: () => {
                  this.getDataList()
                }
              })
            } else {
              this.$message.error(data.msg)
            }
          })
        })
      }
    }
  }
</script>
<style scoped>
  .text-overflow1 {
    width: 300px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
  }
</style>

